What does copen mean?
Copen is a noun naming a particular shade of blue — a deep, slightly grayish blue that sits very close to navy. Its name comes from the city of Copenhagen, much as other colours take their names from places associated with their trade or production. The word belongs almost entirely to the world of textiles: it turns up in fabric and yarn catalogues, vintage dressmaking and knitting patterns, and descriptions of dyes far more often than in ordinary conversation. A tailor might recommend a suit 'in copen', or an old pattern might specify wool 'in copen' for a winter garment. Because it is rare outside these specialist contexts, many readers meet it only in historical or craft sources, which gives it a somewhat old-fashioned charm. For anyone working with cloth, colour matching, or fashion history, however, copen remains a precise and useful term, identifying a specific point on the blue spectrum between ordinary navy and softer slate tones.
nounA dark, grayish blue colour, used especially of fabrics, dyes, and textiles; named after the city of Copenhagen.
- A dark, grayish blue colour, especially as applied to cloth or dye.
"She chose a coat in deep copen, a blue so dark it nearly read as navy."
"The tailor recommended copen for the winter suit, its near-navy depth suiting the season perfectly."
"Vintage knitting patterns frequently call for wool in copen."
Rarely pluralised in practice, since the word typically refers to the colour itself rather than to countable items; when fabrics are counted, the material rather than the colour is pluralised (e.g. 'two bolts in copen').
"The shop had two bolts of cloth in copen."
This obscure word names a whole colour after Denmark's capital: copen is literally 'Copenhagen blue'.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of copen
Copen takes its name from Copenhagen, the capital of Denmark, in the way many colour terms have been borrowed from place names linked to dyestuffs or traded goods. It entered English as a textile and dyeing term, used by merchants, tailors, and pattern writers to designate a dark, grayish blue. Beyond this derivation from the city's name, no deeper etymological lineage in English is firmly established.
How copen is actually used
Copen belongs chiefly to the vocabulary of textiles, fashion, and dyeing rather than everyday speech. It appears most often in older pattern books, fabric catalogues, and descriptions of knitwear, where it denotes a dark, slightly grayish blue close to navy.
Easily confused with copen
"Open" means not closed or available, whereas "copen" is a specific dark-blue colour.